<template>
  <div>
    <sub-title :subTitle="'添加类目'" :isRefresh="false"></sub-title>
    <div class="body" v-loading="loading">
      <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="150px" class="form">
        <el-form-item label="类目名称: " prop="navName">
          <el-input v-model.trim="ruleForm.navName"></el-input>
        </el-form-item>
        <el-form-item label="上级类目: " prop="parentId">
          <el-select :disabled="isChild" v-model="ruleForm.parentId" placeholder="请选择分类">
            <el-option :label="item.navName" :value="item.id" v-for="item in headerList"></el-option>
          </el-select>
          <p class="form-tips" v-if="!isChild">不选择分类默认为顶级分类</p>
        </el-form-item>
        <el-form-item label="排序: " prop="navSort">
          <el-input v-model="ruleForm.navSort" type="number"></el-input>
        </el-form-item>
        <el-form-item label="是否显示: " prop="status">
          <el-radio-group v-model="ruleForm.status">
            <el-radio label="0">显示</el-radio>
            <el-radio label="1">不显示</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item label="类目图标: " prop="navIcon" v-if="!isChild">
          <img :src="ruleForm.navIcon" alt="" class="form-img" v-if="ruleForm.navIcon">
          <div class="upload-btn-wrap">
            <label for="upload"><el-button size="small" type="primary">上传图片</el-button></label>
            <input @change="uploadNavIcon" id="upload" type="file" class="upload-input" accept="image/jpeg, image/png">
            <p class="form-tips">建议图标尺寸为18*18比例，图片只能为jpg、png格式</p>
          </div>
        </el-form-item>
        <el-form-item label="类目描述: " prop="navDesc">
          <el-input type="textarea" v-model="ruleForm.navDesc"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="submitForm('ruleForm')" :loading="submitLoading">提交</el-button>
          <el-button @click="back">返回</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  import subTitle from "@/components/subTitle"
  import mixin from "@/utils/mixin"
  export default {
    name: "addHeader",
    mixins: [mixin],
    components: {
      subTitle,
    },
    data(){
      let navIconValid = (item, value, callback) => {
        if (!this.ruleForm.navIcon && !this.isChild){
          callback(new Error('请上传类目图标'));
        } else {
          callback();
        }
      };
      return{
        headerList: [{id: 0, navName: '顶级类目'}],
        isChild: false,
        ruleForm: {
          navName: '',
          parentId: 0,
          navSort: '',
          status: '0',
          navIcon: '',
          navDesc: ''
        },
        rules: {
          navName: [
            { required: true, message: '请输入分类名称', trigger: 'blur' },
            { max: 20, message: '长度必须小于20个字符', trigger: 'blur' }
          ],
          navIcon: [
            { validator: navIconValid, trigger: 'change'}
          ]
        },
        loading: false,
        submitLoading: false,
      }
    },
    created(){
      this.$http.post("merchantNavigation/query_navigation_type_tree", {
      }).then((res) => {
        this.headerList = [...this.headerList, ...res];
        if (this.$route.query.parentId){
          this.$set(this.ruleForm, 'parentId', Number(this.$route.query.parentId));
          this.isChild = true;
        }
      })
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            this.submitLoading = true;
            this.addEdit("merchantNavigation/merchant_navigation_add");
          } else {
            return false;
          }
        });
      },
      uploadNavIcon(file){
        this.uploadFile(file).then((res) => {
          this.$set(this.ruleForm, 'navIcon', res.imgUrl);
        })
      },
      addEdit(url){
        this.$http.post(url, this.ruleForm).then(() => {
          this.$msgSuc("操作成功");
          setTimeout(() => {
            this.$router.push("/promotion/header");
            this.submitLoading = false;
          }, 500)
        }, (err) => {
          this.$msgErr(err.msg);
          this.submitLoading = false;
        })
      }
    }
  }
</script>

<style scoped lang="scss">
  @import "~@/assets/css/common";
  .form{
    width: 600px;
    .form-tips{
      font-size: 12px;
      color: $gray;
    }
  }
  .form-tips{
    font-size: 12px;
    color: $gray;
    line-height: 16px;
    margin-top: 5px;
  }
  .form-select{
    margin-bottom: 20px;
    &:last-child{
      margin-bottom: 0;
    }
    .el-select{
      width: 170px;
      margin-right: 20px;
    }
    span{
      margin-right: 10px;
      cursor: pointer;
    }
  }
</style>
